Mahadzir bin Haji Abdul Hamid (born 16 November 1975) is a Malaysian politician.
He is a member of United Malays National Organization (UMNO), a component party of Barisan Nasional (BN) coalitions.
He attended the Sekolah Menengah Kebangsaan Jeneri and obtained the Malaysian Certificate of Education (SPM) in 1992.
He continued his studies at Sekolah Menengah Kebangsaan Sik and obtained the Malaysian Higher School Certificate (STPM) in 1994.
Furthermore, he attended the Universiti Utara Malaysia (UUM) and completed his studies with a bachelor's degree in Business Management in 1998.